CEDEMERIDyE OF BOREAL AMERICA. 415 



well marked. Body beneath slightly darker than above, 

 densely punctate. Legs pale. Length .25-. 40 inch.; 

 6.25-10 mm. 



In the small group of species with well-marked elytral 

 costas, this one has much coarser and denser pubescence. 

 The antennae and legs are always pale, and the terminal 

 joint of maxillary palpus not longer than the preceding 

 joint. 



It is probable that this species is confounded with 

 pallida in collections. 



Occurs in Utah, Texas and Arizona. 



Oxacis floridana n. sp. 



Entirely piceous black, with sparse cinereous pubes- 

 cence, thorax reddish yellow. Head moderately densely 

 punctate. Thorax about as wide as long, sides arcuate in 

 front, obliquely narrowed to base, disc somewhat irregu- 

 lar, densely punctate. Elytra piceous black, with faint 

 purplish tinge, surface rather densely punctate, very dis- 

 tinctly bicostulate on the disc. Body beneath finely and 

 densely punctulate. Legs black. Length .40 inch. ; 10 

 mm. 



The last joint of the maxillary palpi is one-half longer 

 than the preceding, cultriform and acute at tip. 



One specimen, Florida. 



Oxacis grisea n. sp. 



Form less slender, piceous, faintly paler along the su- 

 ture and side margin of elytra, surface with rather coarse 

 grayish white pubescence. Antennae brownish. Termi- 

 nal joint of maxillary palpus elongate-cultriform and acute 

 at tip. Head rather coarsely and closely punctate. Tho- 

 rax longer than wide, the sides in front feebly arcuate, 

 posteriorly narrower, disc regularly convex, the punctua- 

 tion moderate in size and not dense. Elytra moderately 



